Table Of Content

CONTENTS Volume 30 Number 7 1 A. Miltner and W. Zech Carbohydrate decomposition in beech litter as influenced by aluminium, iron and manganese oxides Michael Stemmer, Organic matter and enzyme activity in particle-size fractions of soils Martin H. Gerzabek obtained after low-energy sonication and Ellen Kandeler M. Pansu, Z. Sallih and P. Bottner Modelling of soil nitrogen forms after organic amendments under controlled conditions J. P. Malone, R. J. Stevens Combining the '°N and acetylene inhibition techniques to examine and R. J. Laughlin the effect of acetylene on denitrification Qishui Zhang and John C. Zak Effects of water and nitrogen amendment on soil microbial biomass and fine root production in a semi-arid environment in West Texas David R. Chadwick, Philip Ineson, Decomposition of Pinus sy/vestris \itter in litter bags: influence of Clive Woods and Trevor G. Piearce underlying native litter layer Denis Curtin, C. A. Campbell Effects of acidity on mineralization: pH-dependence of organic and Abdul Jalil matter mineralization in weakly acidic soils J. M. Moxley and K. A. Smith Factors affecting utilisation of atmospheric CO by soils Luigi Chiarini, Annamaria Bevivino, Inoculation of Burkholderia cepacia, Pseudomonas fiuorescens and Silvia Tabacchioni and Enterobacter sp. on Sorghum bicolor: root colonization and plant Claudia Dalmastri growth promotion of dual strain inocula V. Rasiah and B. D. Kay Legume N mineralization: effect of aeration and size distribution of water-filled pores M. J. Vreeken-Buijs, J. Hassink Relationships of soil microarthropod biomass with organic matter and L. Brussaard and pore size distribution in soils under different land use Short Communications G. W. McCarty, R. Siddaramappa Potential error associated with measurement of carbon mineraliz- and R. J. Wright ation in soil treated with coal combustion byproducts M.A. Rao, A. Violante Interactions between tannic acid and acid phosphatase and L. Gianfreda C. N. Bedrock, M. V. Cheshire, Identification of nitrogenous components of fungal and bacterial B. L. Williams, |. Solntseva, origin immobilized in decomposing wheat straw by NMR spec- S. J. Chapman, J. A. Chudek troscopy using '°N CPMAS and B. A. Goodman Book Review Volume 30 Number 2 Marie-Christine Dictor, 119 Reassessement of the K,, coefficient of the fumigation—extraction Laurent Tessier and Guy Soulas method in a soil profile S. L. Rogers, R. S. Kookana, 129 Microbial degradation of strychnine rodenticide in South Australian D. P. Oliver and A. Richards agricultural soils: laboratory studies J. S. Singh, A. S. Raghubanshi, 135 Methane flux from irrigated paddy and dryland rice fields, and from V.S. Reddy, S. Singh and seasonally dry tropical forest and Savanna soils of India A. K. Kashyap C. J. Koopmans, A. Tietema and Effects of reduced N deposition on litter decomposition and N J. M. Verstraten cycling in two N saturated forests in The Netherlands Claudia Limmer and Harold L. Drake Effects of carbon, nitrogen, and electron acceptor availability on anaerobic N>-fixation in a beech forest soil A. R. Dyer, J. C. S. Fowler and Detecting genetic variation in exotic earthworms, Aporrectodea spp. G. H. Baker (Lumbricidae), in Australian soils using RAPD markers Rita de C. G. Mesquita, Slow litter decomposition in a Cecropia-dominated secondary forest Sarah W. Workman and of central Amazonia Constance L. Neely T. K. Adhya, P. Pattnaik, Influence of phosphorus application on methane emission and S. N. Satpathy, S. Kumaraswamy production in flooded paddy soils and N. Nethunathan Karin van Dijk and Eric B Nelson Inactivation of seed exudate stimulants of Pythium ultimum sporangium germination by biocontrol strains of Enterobacter cloacae and other seed-associated bacteria Wietse De Boer, Anti-fungal properties of chitinolytic dune soil bacteria Paulien J. A. Klein Gunnewiek, Petra Lafeber, Jaap D. Janse, Bendien E. Spit and Jan W. Woldendorp J. L. Chotte, J. N. Ladd Sites of microbial assimilation, and turnover of soluble and particulate '*C-labelled substrates decomposing in a clay soil and M. Amato Josef H. Gorres, Spatial and temporal patterns of soil biological activity in a forest and Marnie J. Dichiaro, Jodi B. Lyons an old field and José A. Amador Jon E. Lindstrom, Ronald P. Barry Microbial community analysis: a kinetic approach to constructing and Joan F. Braddock potential C source utilization patterns Barbara A. Handley, Alan J. Hedges Importance of host plants for detecting the population diversity of and John E. Beringer Rhizobium leguminosarum biovar viciae in soil G. Puri and M. R. Ashman Relationship between soil microbial biomass and gross N mineralisation David C. Thompson, Suppression of summer patch by rhizosphere competent bacteria Donald Y. Kobayashi and and their establishment on Kentucky bluegrass Bruce B. Clarke R.-A. Sandaa, @. Enger and Rapid method for fluorometric quantification of DNA in soil V. Torsvik Short Communication W. T. Frankenberger Jr. Effects of trace elements on arsenic volatilization Volume 30 Number 3 Mary C. Savin and 275 Biodegradation of norflurazon in a bog soil Jose A. Amador P. J. A. Howard, D. M. Howard and 285 Effects of tree species and soil physico-chemical conditions on the L. E. Lowe nature of soil organic matter Susumu Asakawa, 299 Communities of methanogenic bacteria in paddy field soils with Masayo Akagawa- Matsushita, long-term application of organic matter Yosuke Koga and Koichi Hayano M.P. Bernal, A. F. Navarro, Influence of sewage sludge compost stability and maturity on carbon M.A. Sanchez-Monedero, and nitrogen mineralization in soil A. Roig and J. Cegarra B. S. Griffiths, K. Ritz, Ryegrass/rhizosphere microbial community structure under elevated N. Ebblewhite, E. Paterson and carbon dioxide concentrations, with observations on wheat rhizo- K. Killham sphere IV Kyoko Ikeda, Koki Toyota and Role of extracellular pectinases in the rhizoplane competence of a Makoto Kimura rhizobacterium Burkholderia pickettii MSP3Rif Shengjun Lu, Kim G. Mattson, Root respiration of Douglas-fir seedlings: effects of N concentration Joe B. Zaerr and John D. Marshall N. Z. Lupwayi and |. Haque Mineralization of N, P, K, Ca and Mg from Sesbania and Leucaena leaves varying in chemical composition Cecilia Palmborg, Anders Nordgren Multivariate modelling of soil microbial variables in forest soil and Erland Baath contaminated by heavy metals using wet chemical analyses and pyrolysis GC/MS S. Ellis, M. T. Howe, Carbon and nitrogen dynamics in a grassland soil with varying pH: K. W. T. Goulding, effect of pH on the denitrification potential and dynamics of the M.A. Mugglestone and reduction enzymes L. Dendooven Susan J. Grayston, Selective influence of plant species on microbial diversity in the Shenquiang Wang, rhizosphere Colin D. Campbell and Anthony C. Edwards Anita Pandey, Eklabya Sharma and Influence of bacterial inoculation on maize in upland farming Lok Man S. Palni systems of the Sikkim Himalaya Christoph Schwarzer, Physiological and electron microscopical investigations on syn- Bernhard Auer, Jorg Klima and trophic dicyandiamide degradation by soil bacteria Kurt Haselwandter B. Stenberg, M. Johansson, M. Pell, Microbial biomass and activities in soil as affected by frozen and cold K. Sjodahl-Svensson, J. Stenstrom storage and L. Torstensson Barry R. Taylor Air-drying depresses rates of leaf litter decomposition R. A. Wilson, B. A. Handley and Bacteriocin production and resistance in a field population of J. E. Beringer Rhizobium leguminosarum biovar viciae A. Saa, M. C. Trasar-Cepeda and Soil P status and phosphomonoesterase activity of recently burnt T. Carballas and unburnt soil following laboratory incubation Short Communication K. D. Stephen, J. R. M. Arah, Gas diffusion coefficient profile in peat determined by modelling K. L. Thomas, J. Benstead and mass spectrometric data: implications for gas phase distribution D. Lloyd Volume 30 Number 4 Monika Godde and Ralf Conrad 433 Simultaneous measurement of nitric oxide production and consumption in soil using a simple static incubation system, and the effect of soil water content on the contribution of nitrification B. L. Candole and C. S. Rothrock Using marked strains to assess the effect of hairy vetch amendment on the inoculum densities of TJhielaviopsis basicola, Pythium ultimum and Rhizoctonia solani Eli Zaady, Peter Groffman and Nitrogen fixation in macro- and microphytic patches in the Negev Moshe Shachak desert L. J. Sanger, P. Cox, P. Splatt, Variability in the quality and potential decomposability of Pinus M. Whelan and J. M. Anderson sy/vestris litter from sites with different soil characteristics: acid detergent fibre (ADF) and carbohydrate signatures C. Crecchio and G. Stotzky Insecticidal activity and biodegradation of the toxin from Baci//us thuringiensis subsp. kurstaki bound to humic acids from soil H. Tapp and G. Stotzky Persistence of the insecticidal toxin from Bacillus thuringiensis subsp. kurstaki in soil V A. Smolander, O. Priha, Nitrogen and carbon transformations before and after clear-cutting L. Paavolainen, J. Steer in repeatedly N-fertilized and limed forest soil and E. Malkonen S. Yamulki, S. C. Jarvis and P. Owen Nitrous oxide emissions from excreta applied in a simulated grazing pattern K. D. Stephen, J. R. M. Arah, Root-mediated gas transport in peat determined by argon diffusion W. Daulat and R. S. Clymo Inko Arth, Peter Frenzel and Denitrification coupled to nitrification in the rhizosphere of rice Ralf Conrad Uptake of '*C-SAN 789 F and '*C-cyproconazole into germinating Urs Simmen and Ulrich Gisi wheat following seed treatment at different soil matric potentials K. Jayachandran, N. B. Stolpe, Application of '*C-most-probable-number technique to enumerate T. B. Moorman and P. J. Shea atrazine-degrading microorganisms in soil R. D. Bardgett, S. Keiller, R. Cook Dynamic interactions between soil animals and microorganisms in and A. S. Gilburn upland grassland soils amended with sheep dung: a microcosm experiment Short Communications R. J. Stevens, R. J. Laughlin and Measuring the mole fraction and source of nitrous oxide in the field J. P. Malone Rasmus N. Jorgensen, N»O emission immediately after rainfall in a dry stubble field Bodil J. Jorgensen and Niels E. Nielsen Volume 30 Number 5 K. Haron, P. C. Brookes, 547 Microbial biomass and soil organic matter dynamics in oil palm J. M. Anderson and Z. Z. Zakaria (Elaeis guineensis jacq.) plantations, West Malaysia V. L. Barbosa-Jefferson, F. J. Zhao, 553 Thiosulphate and tetrathionate oxidation in arable soils S. P. McGrath and N. Magan T. Mueller, L. S. Jensen, 561 Turnover of carbon and nitrogen in a sandy loam soil following N. E. Nielsen and J. Magid incorporation of chopped maize plants, barley straw and blue grass in the field Donald A. Klein, Mark W. Paschke Assessment of fungal—bacterial development in a successional and Edward F. Redente shortgrass steppe by direct integration of chloroform-fumigation extraction (FE) and microscopically derived data M. M. Cotteaux, K. B. McTiernan, Chemical composition and carbon mineralisation potential of Scots B. Berg, D. Szuberla, P. Dardenne pine needles at different stages of decomposition and P. Bottner P. Bottner, F. Austrui, J. Cortez, Decomposition of '*C- and '°N-labelled plant material, under G. Billés and M. M. Codteaux controlled conditions, in coniferous forest soils from a north-south climatic sequence in western Europe Tommy Harder Nielsen and Nitrification, denitrification, and N-liberation associated with two Niels Peter Revsbech types of organic hot-spots in soil Joseph Troxler, Marcello Zala, Transport of a biocontrol Pseudomonas fluorescens through 2.5-M Andreas Natsch, Jakob Nievergelt, deep outdoor lysimeters and survival in the effluent water Christoph Keel and Genevieve Défago Sigrun Dahlin and Ernst Witter Can the low microbial biomass C-to-organic C ratio in an acid and a metal contaminated soil be explained by differences in the substrate utilization efficiency and maintenance requirements? C. Abadie, V. Edel and Soil suppressiveness to fusarium wilt: influence of a cover-plant on C. Alabouvette density and diversity of fusarium populations H. Keith Calibration of the ??P bioassay for eucalypt roots in the field VI Short Communications T. W. Willison, J. C. Baker, Comparison of a wet and dry !°N isotopic dilution technique as a D. V. Murphy and K. W. T. Goulding short-term nitrification assay Karen D. Burkhead, Biological control bacterium Enterobacter cloacae $11:T:07 (NRRL Patricia J. Slininger and B-21050) produces the antifungal compound phenylacetic acid in David A. Schisler Sabouraud maltose broth culture C. A. Engelkes and D. R. Fravel Procedure for electrophoretic analysis of proteins from metham sodium-treated microsclerotia of Vertici/lium dahliae P. R. Herron, |. K. Toth, Selective effect of antibiotics on survival and gene transfer of G. H. J. Heilig, A. D. L. Akkermans, streptomycetes in soil A. K aragouni and E. M.H. Wellington Volume 30 Number 6 R. M. Zablotowicz, R. E. Hoagland 679 2-Nitroacetanilide as substrate for determination of aryl acylamidase and S. C. Wagner activity in soils Hannu Fritze, Taina Pennanen and 687 Characterization of dissolved organic carbon from burned humus Veikko Kitunen and its effects on microbial activity and community structure H. Pathak and D. L. N. Rao 702 Carbon and nitrogen mineralization from added organic matter in saline and alkali soils Bernhard Mogge, 703 Nitrous oxide emissions and denitrification N-losses from forest soils Ernst-August Kaiser and in the Bornhéved Lake region (Northern Germany). Jean-Charles Munch G. Cuenca, Z. De Andrade and Diversity of glomalean spores from natural, disturbed and revege- G. Escalante tated communities growing on nutrient-poor tropical soils A. Fioretto, A. Musacchio, Decomposition dynamics of litters of various pine species in a G. Andolfi and A. Virzo De Santo Corsican pine forest Inger Bergman, Bo H. Svensson and Regulation of methane production in a Swedish acid mire by pH, Mats Nilsson temperature and substrate C. J. Watson and C. L. Mills Gross nitrogen transformations in grassland soils as affected by previous management intensity G. Almendros, M. E. Guadalix, Distribution of structural units in humic substances as revealed by F. J. Gonzalez-Vila and F. Martin multi-step selective degradations and '°C-NMR of successive residues C. R. Alvarez, R. Alvarez, Associations between organic matter fractions and the active soil M.S. Grigera and R. S. Lavado microbial biomass Laura Paavolainen and Nitrification and denitrification in soil from a clear-cut Norway Aino Smolander spruce (Picea abies) stand J. Cortez Field decomposition of leaf litters: relationships between decomposition rates and soil moisture, soil temperature and earthworm activity J. Cortez and M. B. Bouché Field decomposition of leaf litters: earthworm—microorganism interactions—the ploughing-in effect N. Gunapala and K. M. Scow Dynamics of soil microbial biomass and activity in conventional and organic farming systems David Boyle Nutritional factors limiting the growth of Lentinu/a edodes and other white-rot fungi in wood X. Zou and M. Bashkin Soil carbon accretion and earthworm recovery following revegeta- tion in abandoned sugarcane fields Vil Short Communication Hee Woo Park, Ki Seok Koh and 831 Molecular weights and inhibitor sensitivities of alkaline phosphatase Soon Cheol Park isoenzymes from the midgut of the earthworm, Eisenia andrei Volume 30 Number 7 Thomas E. Jordan, Donald E. Weller 833 Denitrification in surface soils of a riparian forest: Effects of water, and David L. Correll nitrate and sucrose additions Bintoro Gunadi, 845 Seasonal dynamics of decomposition of coniferous leaf litter in a Herman A. Verhoef and forest plantation (Pinus merkusi/) in Central Java, Indonesia Jacques J. M. Bedaux J. A. Ashby, W. B. Bowden and Controls on denitrification in riparian soils in headwater catchments P. S. Murdoch of a hardwood forest in the Catskill Mountains, U.S.A. Hasta Pratopo Lukito, Kenji Kouno Phosphorus requirements of microbial biomass in a regosol and an and Tadao Ando andosol David Boyle, Charles Wiesner and Factors affecting the degradation of polyaromatic hydrocarbons in Andrew Richardson soil by white-rot fungi R. F. Grant Simulation of methanogenesis in the mathematical model ecosys J. Luo, R. W. Tillman, R. E. White Variation in denitrification activity with soil depth under pasture and P. R. Ball J. D. Jastrow, R. M. Miller and Contributions of interacting biological mechanisms to soil aggregate J. Lussenhop Stabilization in restored prairie Zhenli He and Jun Zhu Microbial utilization and transformation of phosphate adsorbed by variable charge minerals J. Hallmann, A. Quadt-Hallmann, Interactions between Meloidogyne incognita and endophytic bac- R. Rodriguez-Kabana and teria in cotton and cucumber J. W. Kloepper M. Shishido and C. P. Chanway Storage effects on indigenous soil microbial communities and PGPR efficacy R. C. Venette and H. Ferris Influence of bacterial type and density on population growth of bacterial-feeding nematodes Daniel L. Kelting, James A. Burger Estimating root respiration, microbial respiration in the rhizosphere, and Gerry S. Edwards and root-free soil respiration in forest soils Short Communication W.-R. Knauber, A. J. Krotzky and Gradient gel electrophoretic characterization of humic substances B. Schink and of bound residues of the herbicide bentazon Volume 30 Number 8/9 Sung Ok Han and Peter B. New 975 Isolation of Azospirillum spp. from natural soils by immunomagnetic separation D. W. Cullen and P. R. Hirsch 983 Simple and rapid method for direct extraction of microbial DNA from soil for PCR Kil Yong Kim, D. Jordan 995 Enterobacter agglomerans, phosphate solubilizing bacteria, and and G. A. McDonald microbial activity in soil: Effect of carbon sources F. Camina, C. Trasar-Cepeda, 1005 Measurement of dehydrogenase activity in acid soils rich in organic F. Gil-Sotres and C. Leirdos matter S. J. Chapman and M. Thurlow 1013 Peat respiration at low temperatures S. X. Chang and C. M. Preston 1023 Incorporation and extractability of residual '°N in a coniferous forest soil Vil Angela Hodge, Eric Paterson, Characterisation and microbial utilisation of exudate material from Susan J. Grayston, the rhizosphere of Lo/ium perenne grown under CO> enrichment Colin D. Campbell, Brian G. Ord and Kenneth Killham Jeanine L. Kay-Shoemake, Polyacrylamide as an organic nitrogen source for soil microorgan- Mary E. Watwood, Rodrick D. Lentz isms with potential effects on inorganic soil nitrogen in agricultural and Robert E. Sojka soil P. V. Ajithkumar, K. P. Gangadhara, Soil inoculation with Pseudomonas aeruginosa 3mT eliminates the P. Manilal and A. A. M. Kunhi inhibitory effect of 3-chloro- and 4-chlorobenzoate on tomato seed germination C. Crecchio and G. Stotzky Binding of DNA on humic acids: Effect on transformation of Bacillus subtilis and resistance to DNase Karin Ahlich, Daniel Rigling, Dark septate hyphomycetes in swiss conifer forest soils surveyed Ottmar Holdenrieder using Norway-spruce seedlings as bait and Thomas N. Sieber J. Bauhus, D. Paré and L. Coté Effects of tree species, stand age and soil type on soil microbial biomass and its activity in a southern boreal forest Benny Chefetz, Zohar Kerem, Isolation and partial characterization of laccase from a thermophilic Yona Chen and Yitzhak Hadar composted municipal solid waste M.S. Coyne, Q. Zhai, Gross nitrogen transformation rates in soil at a surface coal mine site C. T. MacKown and R. |. Barnhisel reclaimed for prime farmland use R. Segers and S. W. M. Kengen Methane production as a function of anaerobic carbon mineralization: A process model R. J. Stevens, R. J. Laughlin and Soil pH affects the processes reducing nitrate to nitrous oxide and J. P. Malone di-nitrogen Jay Gulledge and Joshua P. Schimel Moisture control over atmospheric CH, consumption and CO, production in diverse Alaskan soils Z. Q. An, B. Z. Guo and Viability of soilborne spores of glomalean mycorrhizal fungi J. W. Hendrix B. A. Byzov, V. N. Thanh, Killing and hydrolytic activities of the gut fluid of the millipede 1. P. Bab’eva, E. B. Tretyakova, Pachyiulus flavipes C.L. Koch on yeast cells 1. A. Dyvak and Ya. M. Rabinovich R. P. Griffiths, P. S. Homann and Denitrification enzyme activity of Douglas-fir and red alder forest R. Riley soils of the Pacific Northwest Nicholas V. Coleman, Aerobic biodegradation of hexahydro-1,3,5-trinitro-1,3,5-triazine Darryl R. Nelson and (RDX) as a nitrogen source by a Rhodococcus sp., strain DN22 Trevor Duxbury Wendy L. Goodfriend Microbial community patterns of potential substrate utilization: a comparison of salt marsh, sand dune, and seawater-irrigated agronomic systems V. O. Biederbeck, C. A. Campbell, Soil quality attributes as influenced by annual legumes used as green V. Rasiah, R. P. Zentner manure and Guang Wen Sigmund Jensen and Atmospheric methane consumption in adjacent arable and forest soil Rolf Arnt Olsen systems Short Communications Martin B. Dickman and lian Chet Biodegradation of oxalic acid: A potential new approach to biological control A. Muscolo, S. Cutrupi and S. Nardi IAA detection in humic substances Andrew S. Ball and Bert G. Drake Stimulation of soil respiration by carbon dioxide enrichment of marsh vegetation IX Pete Falloon, Pete Smith, Estimating the size of the inert organic matter pool from total soil Kevin Coleman and organic carbon content for use in the Rothamsted carbon model Stewart Marshall O. Roger Anderson and Abundances and diversity of gymnamoebae associated with earth- P. J. Bohlen worm (Lumbricus terrestris) middens in a northeastern U.S. forest K. Annapurna and Y. D. Gaur Antigenic diversity amongst strains of Azospirillum from an Indian soil and their host specificity J. L. Chotte, J. N. Ladd and Measurement of biomass C, N and !'C of a soil at different water M. Amato contents using a fumigation-extraction assay Yoav Bashan and Gina Holguin Proposal for the division of plant growth-promoting rhizobacteria into two classifications: biocontrol-PGPB (plant growth-promoting bacteria) and PGPB Volume 30 Number 10/77 1. M. Young and K. Ritz 1229 Can there be a contemporary ecological dimension to soil biology without a habitat? Stewart F. Ledgard, Steve C. Jarvis 1233 Short-term nitrogen fluxes in grassland soils under different long- and David J. Hatch term nitrogen management regimes A. M. Jackson and A. S. Ball 1243 Importance of environmental factors on the growth of Thermo- actinomyces thalpophilus P. S. J. Verburg, A. Gorissen and 1251 Carbon allocation and decomposition of root-derived organic matter W. J. Arp in a plant—soil system of Ca//una vulgaris as affected by elevated CO» K. H. S6derberg and E. Baath 1259 Bacterial activity along a young barley root measured by the thymidine and leucine incorporation techniques Evgenia V. Blagodatskaya and 1269 Interactive effects of pH and substrate quality on the fungal-to- Traute-Heidi Anderson bacterial ratio and qCO>2 of microbial communities in forest soils P. Marschner and D. E. Crowley 1275 Phytosiderophores decrease iron stress and pyoverdine production of Pseudomonas fluorescens PF-5 (pvd-inaZ) C. Ehaliotis, G. Cadisch 1281 Substrate amendments can alter microbial dynamics and N and K. E. Giller availability from maize residues to subsequent crops T. H. De Luca 1293 Relationship of 0.5 M K2SQ, extractable anthrone-reactive carbon to indices of microbial activity in forest soils A. J. Midwood and T. W. Boutton 1301 Soil carbonate decomposition by acid has little effect on 5 '°C of organic matter B . Grisi, C. Grace, P. C. Brookes, 1309 Temperature effects on organic matter and microbial biomass A. Benedetti and M. T. Dell’abate dynamics in temperate and tropical soils P. Bagnasco, L. De La Fuente, 1317 Fluorescent Pseudomonas spp. as biocontrol agents against forage . Gualtieri, F. Noya and A. Arias legume root pathogenic fungi P. F. Grierson, N. B. Comerford 1323 Phosphorus mineralization kinetics and response of microbial and E. J. Jokela phosphorus to drying and rewetting in a Florida Spodosol Berit Swensen and Lars R. Bakken 1333 Nitrification potential and urease activity in a mineral subsoil Flemming Ekelund 1343 Enumeration and abundance of mycophagous protozoa in soil, with special emphasis on heterotrophic flagellates Antonio Gallardo and José Merino 1349 Soil nitrogen dynamics in response to carbon increase in a mediterranean shrubland of SW Spain R. M. Mohr, H. H. Janzen, 1359 Fate of symbiotically-fixed '°N> as influenced by method of alfalfa E. Bremer and M. H. Entz termination X L. Tessier, E. G. Gregorich Spatial variability of soil microbial biomass measured by the and E. Topp fumigation extraction method, and Kec as affected by depth and manure application B. S. Griffiths, R. E. Wheatley, 1379 Dynamics of nematodes and protozoa following the experimental T. Olesen, K. Henriksen, F. Ekelund addition of cattle or pig slurry to soil and R. Renn Ken E. Giller, Ernst Witter and 1389 Toxicity of heavy metals to microorganisms and microbial processes Steve P. Mcgrath in agricultural soils: a review P. F. Schweiger and |. Jakobsen 1415 Dose-response relationships between four pesticides and phosphorus uptake by hyphae of arbuscular mycorrhizas Gunnar Borjesson, Ingvar Sundh, 1423 Methane oxidation in landfill cover soils, as revealed by potential Anders Tunlid and Bo H. Svensson oxidation measurements and phospholipid fatty acid analyses Murray J. Unkovich and 1435 Symbiotic effectiveness and tolerance to early season nitrate in John S. Pate indigenous populations of subterranean clover rhizobia from S.W. Australian pastures Thomas Appel 1445 Non-biomass soil organic N—the substrate for N mineralization flushes following soil drying—rewetting and for organic N rendered CaClo-extractable upon soil drying M.B. Aberra, S. Seah and 1457 Suppression of the take-all fungus (Gaeumannomyces graminis var. K. Sivasithamparam tritici) by a sterile red fungus through induced resistance in wheat (Triticum aestivum) seedling roots Jay Gulledge, Paul A. Steudler and 1463 Effect of CH,4-starvation on atmospheric CH, oxidizers in Taiga and Joshua P. Schimel temperate forest soils Short Communications G. Sparling, 1469 Hot-water-soluble C as a simple measure of labile soil organic Maja Vojvodic-Vukovic matter: the relationship with microbial biomass C and L. A. Schipper M.E. Aouani, R. Mhamdi, M. Mars 1473 Nodulation and growth of common bean under NaCl-stress and R. Ghrir Sarah Hetherington and 1477 Simplified procedure for the characterisation of plant lignins by Jonathan M. Anderson alkaline CuO oxidation E. Benizri, A. Courtade, C. Picard 1481 Role of maize root exudates in the production of auxins by and A. Guckert Pseudomonas fluorescens M.3.1. Volume 30 Number 712 Claudio Marzadori, Silvia Miletti, 1485 Immobilization of jack bean urease on hydroxyapatite: urease Carlo Gessa and Stefano Ciurli immobilization in alkaline soils C. K. Smith, A. D. Munson and 1491 Nitrogen and phosphorus release from humus and mineral soil under M.R. Coyea black spruce forests in central Quebec Rota Wagai, Kristofor R. Brye, 1501 Land use and environmental factors influencing soil surface CO> flux Stith T. Gower, John M. Norman and microbial biomass in natural and managed ecosystems in and Larry G. Bundy southern Wisconsin Samir Kumar Mukherjee and 1511 Possible role of cellular phosphate pool and subsequent accumu- Shuichi Asanuma lation of inorganic phosphate on the aluminum tolerance in Bradyrhizobium japonicum Y. Huang, B. A. Stankiewicz, 1517 Monitoring biomacromolecular degradation of Ca//una vulgaris in a G. Eglinton, C. E. Snape, B. Evans, 23 year field experiment using solid state '*C-NMR and pyrolysis- P. M. Latter and P. Ineson GC/MS Timo Domisch, Leena Finér, 1529 Relocation of carbon from decaying litter in drained peat soils Marjut Karsisto, Raija Laiho and Jukka Laine G. Geiger, H. Brandl, G. Furrer and The effect of copper on the activity of cellulase and /-glucosidase in R. Schulin the presence of montmorillonite or Al-montmorillonite Johannes Lehmann, Ninkabou Poidy, Short-term effects of soil anendment with tree legume biomass on Gotz Schroth and Wolfgang Zech carbon and nitrogen in particle size separates in Central Togo E.-A. Kaiser, K. Kohrs, M. Kicke, Nitrous oxide release from arable soil: importance of N-fertilization, E. Schnug, O. Heinemeyer crops and temporal variation and J. C. Munch M. Francesca Cotrufo, Elevated CO> affects field decomposition rate and palatability of tree Maria Jesus I. Briones leaf litter: importance of changes in substrate quality and Phil Ineson V. Riis, H. Lorbeer and W. Babel Extraction of microorganisms from soil: evaluation of the efficiency by counting methods and activity measurements Lynne F. Whitehead, Susan Young Aspartate and alanine movement across symbiotic membranes of and David A. Day soybean nodules Richard D. Bowden, Carbon dioxide and methane fluxes by a forest soil under laboratory- Kathleen M. Newkirk and controlled moisture and temperature conditions Gina M. Rullo N. Nunan, M. A. Morgan and Ultraviolet absorbance (280 nm) of compounds released from soil M. Herlihy during chloroform fumigation as an estimate of the microbial biomass M. Soedarjo and D. Borthakur Mimosine, a toxin produced by the tree-legume Leucaena provides a nodulation competition advantage to mimosine-degrading Rhizobium strains Short Communications Rock Chabot, Chantal J. Beauchamp, Effect of phosphorus on root colonization and growth promotion Joseph W. Kloepper of maize by bioluminescent mutants of phosphate-solubilizing and Hani Antoun Rhizobium leguminosarum biovar phaseoli Gamini Seneviratne and CO», CH, and N20 emissions from a wetted tropical upland soil L. H. J. van Holm following surface mulch application S. L. Rogers, S. M. Froscio, Degradation of strychnine by pure bacterial cultures isolated from R. S. Kookana and D. P. Oliver South Australian agricultural soils Volume 30 Number 713 Review David A. Wardle 1627 Controls of temporal variability of the soil microbial biomass: a global-scale synthesis Ben G. McMillen, Sato Juniper and 1639 Inhibition of hyphal growth of a vesicular-arbuscular mycorrhizal L. K. Abbott fungus in soil containing sodium chloride limits the spread of infection from spores Jeanine L. Kay-Shoemake, Polyacrylamide as a substrate for microbial amidase in culture and Mary E. Watwood, Robert E. Sojka soil and Rodrick D. Lentz OQ. Mario Aguilar, D. H. Grasso, Rapid identification of bean Rhizobium isolates by a nifH gene-PCR P. M. Riccillo, M. V. Lopez and assay E. Szafer Danilo Lopez-Hernandez, P-isotopic exchange values in relation to Po mineralisation in soils M. Brossard and E. Frossard with very low P-sorbing capacities A. N. Ganeshamurthy, Mobilization of nutrients in tropical soils through worm casting: K. M. Manjaiah and A. Subba Rao availability of macronutrients Thais Winsome and John G. McColl Changes in chemistry and aggregation of a california forest soil worked by the earthworm Argilophilus papillifer Eisen (Megascole- cidae) XII